RPC 49: MDS_GETXATTR
~~~~~~~~~~~~~~~~~~~~
[[mds-getxattr-rpc]]

An RPC that fetches extended attributes for a resource.

.MDS_GETXATTR Request Packet Structure
image::mds-getxattr-request.png["MDS_GETXATTR Request Packet Structure",height=50]

//////////////////////////////////////////////////////////////////////
The mds-getxattr-request.png diagram resembles this text art:

       MDS_GETXATTR:
      --request-----------------------------------------------
      | ptlrpc_body | mdt_body | lustre_capa | name | eadata |
      --------------------------------------------------------
//////////////////////////////////////////////////////////////////////

'ptlrpc_body'::
RPC descriptor. See <<struct-ptlrpc-body>>.

'mdt_body'::
Metadata about the resource. See <<struct-mdt-body>>.

'lustre_capa'::
A "capabilities" structure. See <<struct-lustre-capa>>.

'name'::
A text field supplying the name of the desired resource.

'eadata'::
Information about extended attributes. This buffer is optional and will
appear as zero length in some packets.

.MDS_GETXATTR Reply Packet Structure
image::mds-getxattr-reply.png["MDS_GETXATTR Reply Packet Structure",height=50]

//////////////////////////////////////////////////////////////////////
The mds-getxattr-reply.png diagram resembles this text art:

       MDS_GETXATTR:
      --reply----------------------------
      | ptlrpc_body | mdt_body | eadata |
      -----------------------------------
//////////////////////////////////////////////////////////////////////

'ptlrpc_body'::
RPC descriptor. See <<struct-ptlrpc-body>>.

'mdt_body'::
Metadata about the resource. See <<struct-mdt-body>>.

'eadata'::
Information about extended attributes. This buffer is optional and will
appear as zero length in some packets.